Direct laser writing of nonlinear properties in photosensitive glass

Gautier Papon; Jiyeon Choi; Matthieu Bellec; Arnaud Royon; Kevin Bourhis; Lionel Canioni; Thierry Cardinal

doi:10.1117/12.874467

11 February 2011 Direct laser writing of nonlinear properties in photosensitive glass

Gautier Papon, Jiyeon Choi, Matthieu Bellec, Arnaud Royon, Kevin Bourhis, Lionel Canioni, Thierry Cardinal

Proceedings Volume 7925, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XI; 79250L (2011) https://doi.org/10.1117/12.874467
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

A 1030 nm pulsed femtosecond laser has been use to induce modifications in silver containing glass namely femto-photo luminescent glass (FPL) and Photo-thermo refractive glass (PTR). The 5W 10Mhz laser is focused at a depth of 200 μm in the glass using a 0,52 NA objective. The output polarization of the laser is TM. The tailoring of the number of pulses, pulse energy and repetition rate is achieve by acousto-optic filtering. The interaction resulted in the creation of stable pipe-shaped silver clusters forming bellow refraction-limit 3D structures. Those nano-structures exhibit non-linear properties such as SHG and THG as well as fluorescence. Due to multiphoton absorption, free electrons are created in the central part of the beam, enabling the reduction of Ag⁺ silver ions into Ag⁰ and subsequently Ag_m^X+. The cumulated thermal effect of the pulses weakens the glass matrix allowing the diffusion of the Ag_m^X+. The ion concentration gradient creates a buried electric field enabling non-linear properties. Influences of polarization, dose and fluence on the nonlinear properties are investigated. Our explanation of the causes of SHG and THG are validated by the accordance between the theory and the measurement. Comparisons between theoretic model and our results showing accordance in the limits of out 2D model are demonstrated using different incoming polarizations.

Citation Download Citation

Gautier Papon, Jiyeon Choi, Matthieu Bellec, Arnaud Royon, Kevin Bourhis, Lionel Canioni, and Thierry Cardinal "Direct laser writing of nonlinear properties in photosensitive glass", Proc. SPIE 7925, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XI, 79250L (11 February 2011); https://doi.org/10.1117/12.874467

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KEYWORDS

Glasses

Silver

Second-harmonic generation

Polarization

Femtosecond phenomena

Polarizers

Ions

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